【单选题】设int a=3,b=4,c=5,则下面表达式中,值为0的表达式是( )。
【判断题】Thorin didn't have many relatives.
【简答题】什么是蛋白质的变性?影响蛋白质变性的因素有哪些?
【单选题】They ______trouble lifting the heavy box. [ ]
D.
haven't a great deal of
【单选题】听力原文:F: Why didn't you phone me? M: Um... I didn't have any change for a pay phone. What did the woman want the man to do?
【简答题】日常饮食中高蛋白食品比比皆是, 举出几个食品加工利用蛋白质变性的例子,并谈谈什么是蛋白质变性,影响蛋白质变性的因素有哪些?